Cheating software was 'programmed so foolishly,' one says.
VW, which settled with the feds and paid fines, says 'the SEC is now piling on.'
About 61 vehicles disappeared from the lot in 2017.
Diesel scandal has so far cost more than $25b in the U.S. alone.
Audi's former CEO, meanwhile, remains in jail.
And what's this we hear about an unnamed Chinese gang?
Says 'circle of five' automakers held meetings to limit clean-air controls.
Rules would also set an interim goal of a 20 percent reduction by 2025.
They argue VW should have informed shareholders.
Buybacks of 500,000 cars will continue through 2019.
The move means Audi will likely be beat to punch by rival Mercedes.
Scandal pits Porsche-Piech families against labor, regional interests
Authorities hold Stadler in "investigative detention," afraid he'll try to suppress or change evidence otherwise.